Surf Forecasts:
Kohala Lighthouse surf forecast from 8 Sep 2026:
- Best quality surf: Monday 7 Sep, 8PM (local time) - 7.5ft (2.3m), 12s period, ENE swell with glassy winds.
- Most powerful swell: Monday 7 Sep, 8PM (local time) - 7.5ft (2.3m), 12s period, ENE swell with 1,455 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 8PM (local time) - 7.5ft (2.3m), 12s period with ENE swell.
Best Forecast Surf Conditions for Kohala Lighthouse this week:
The surf forecast for Kohala Lighthouse over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 07) at 8PM. The primary swell is predicted to be 2.3m and 12s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Kohala Lighthouse in the next 16 days are 2.3m 12s and forecast to arrive on Monday (Sep 07) at 8PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 14s period and expected on Tuesday (Sep 08) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Mon 7th Sep) | 7.5ft (2.3m) 12s |
| Best Surf | 8PM (Mon 7th Sep) | 7.5ft (2.3m) 12s |
| Most Powerful | 8PM (Mon 7th Sep) | 7.5ft (2.3m) 12s |
Table - best surf conditions forecast for Kohala Lighthouse over the next 16 days.
The Lowdown
Alright folks, Rusty here. Gonna break down what’s on the menu for the next couple of weeks out at Kohala Lighthouse. This isn’t a spot for beginners; it’s a reef setup for advanced surfers only, and it takes a proper northerly swell to get it going. The water’s sitting at a warm 81°, which is pretty much what you’d expect for this time of year.
First off, don’t get too excited about today. Monday afternoon is showing some lumps at 6ft from the ENE, but that cross-shore wind is making a mess of things. The combined swell energy is strong at 1153, but the comment says it’s marginal. It’s a pass for me.
The real window opens up on Tuesday the 8th. We’ve got a solid couple of swell pulses moving in. Tuesday morning, expect clean surf with light offshore winds out of the SW. Swell is 6ft from the ENE with an 11-second period, giving a strong energy reading of 943. The lineup should have some decent shape. Tuesday afternoon stays clean with a lighter breeze, dropping to 5ft from the NE (756 energy). This is the standout period. Clean waves with a little punch, perfect for the advanced crew. Just be aware, crowds are sometimes a factor here.
Wednesday the 9th sees a drop-off. Swell fades to 3ft and the winds turn onshore and get gusty out of the east at 12-19 mph. Conditions go to crap, and the energy readings are weak around 366-392. It’s a full skip.
From Wednesday the 9th right through to Tuesday the 22nd of September, it is a long, flat, and ugly stretch. The swell stays small, mostly between 2ft and 5ft, but the wind is almost always a fresh cross-shore or cross-onshore. The wave state comments are consistently “poor surf conditions.” Energy levels drop to the low hundreds, and by mid-period the swell height is barely breaking. There are a couple of late-blooming pulses on the 18th and 20th with a longer period (12 seconds) from the NNW, but the energy is weak (250-330) and the winds are still messy. Nothing worth paddling out for.
So, to sum it up: you’ve got a tight two-day window on the 8th. The Tuesday morning and afternoon sessions are the only legit shots. After that, we’re looking at a solid 13-day gap of junk. Don’t hold your breath for the second week; it’s a write-off.
Stay wet, stay picky.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Tue afternoon. Warm (max 28°C on Mon afternoon, min 25°C on Wed night). Winds increasing (calm on Tue night, fresh winds from the ENE by Wed night). | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Thu afternoon, min 24°C on Thu night). Mainly fresh winds. | |||||||||||||||||||
Mon 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | ENE 12 | ENE 11 | ENE 11 | NE 10 | NE 9 | E 13 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 11 | ENE 11 | ENE 10 | ENE 10 | ENE 9 | NNE 9 | ENE 9 | NE 8 | NE 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 887 | 884 | 700 | 450 | 237 | 212 | 193 | 254 | 240 | 168 | 229 | 387 | 460 | 140 | 290 | 398 | 94 | 90 | 177 | 120 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross-off | glassy | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross |
High Tide | 1:05AM0.45m | 1:48PM0.89m | 1:50AM0.53m | 2:20PM0.88m | 2:30AM0.61m | 2:48PM0.83m | 3:09AM0.67m | 3:15PM0.77m | 3:48AM0.72m | 3:38PM0.70m | 4:26AM0.74m | 3:58PM0.62m | ||||||||
Low Tide | 8:13PM0.22m | 6:42AM0.10m | 8:32PM0.19m | 7:32AM0.10m | 8:53PM0.16m | 8:18AM0.12m | 9:14PM0.13m | 9:02AM0.16m | 9:35PM0.11m | 9:44AM0.21m | 9:55PM0.11m | 10:28AM0.27m | 10:16PM0.11m | |||||||
 |  | |  |  | | | |  | | | | |  | | | | | | | |
 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — |
 | 6:32 | — | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — | — | 6:29 | — | — | 6:29 | — | — | 6:28 | — |
mm | — | — | — | 1 | 3 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 26 |
Feels °C | 31 | 33 | 31 | 29 | 32 | 31 | 26 | 26 | 24 | 24 | 23 | 25 | 25 | 23 | 26 | 25 | 24 | 25 | 25 | 27 |
Swell 1 Height (m) Direction Period (s) | ENE 12 | WSW 14 | WSW 11 | NE 10 | NE 9 | E 13 | E 12 | E 12 | SSW 16 | E 11 | SW 10 | NNE 8 | SW 9 | ENE 10 | SSW 14 | WSW 8 | NNE 9 | NNE 8 | ESE 7 | NE 8 |
| kJ | 887 | 1977 | 771 | 450 | 237 | 212 | 193 | 139 | 26 | 91 | 16 | 13 | 14 | 140 | 21 | 7 | 94 | 90 | 5 | 120 |
Swell 2 Height (m) Direction Period (s) | SW 15 | ENE 11 | ENE 11 | WSW 10 | E 13 | W 7 | W 6 | WSW 6 | NW 10 | SW 18 | SSW 16 | SW 10 | SW 15 | NNE 7 | WSW 9 | SW 16 | ENE 9 | ESE 7 | SE 9 | ESE 8 |
| kJ | 435 | 884 | 700 | 386 | 225 | 24 | 7 | 3 | 4 | 12 | 26 | 15 | 35 | 31 | 8 | 10 | 46 | 5 | 3 | 11 |
Swell 3 Height (m) Direction Period (s) | N 9 | E 14 | E 14 | E 14 | W 8 | SW 14 | SSW 7 | NNW 10 | SW 7 | SW 12 | NW 9 | SSW 16 | W 11 | WSW 9 | W 12 | SW 13 | SW 8 | SW 8 | W 11 | ENE 8 |
| kJ | 6 | 150 | 243 | 306 | 69 | 7 | 5 | 10 | 2 | 6 | 3 | 25 | 2 | 8 | 3 | 7 | 3 | 3 | 2 | 7 |
Wind waves Height (m) Direction Period (s) | ENE 6 | — | — | — | — | NE 8 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 11 | ENE 11 | ENE 5 | ENE 10 | ENE 9 | ENE 4 | ENE 9 | NE 8 | — |
| kJ | 260 | — | — | — | — | 154 | 192 | 254 | 240 | 168 | 229 | 387 | 460 | 35 | 290 | 398 | 27 | 90 | 177 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 5 | 0 | 0 | 0 | 0 | 73 | 99 | 73 | 73 | 73 | 25 | 71 | 25 | 71 | 71 | 73 | 57 | 71 | 73 | 69 |
Best forecast wave conditions in Big Island | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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Information about the Kohala Lighthouse Surf forecast
The above surf forecast table for Kohala Lighthouse provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Kohala Lighthouse can be found by selecting the local surf guide option on the grey menu. Our Kohala Lighthouse surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Kohala Lighthouse) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Kohala Lighthouse may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Kohala Lighthouse is 87 km (54 miles) from Kihei. If you plan a vacation in Big Island, look for hotels and other accommodation in Kihei. Kihei has rooms for a wide range of budgets as well as car hire and transport links.
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